First of all you will split up into groups of 3. Each group is supposed to develop the unit. At the end the publishing company will choose the best.
Bellow you've got the different topics and the webs that you can visit to build up the unit.
2.- Types of reproduction 1
3.- How animals reproduce
Now that you have finished the unit you have to write an exam on it. The exam should be a "True/False" or a "multiple choice" one. It should have at least 10 questions.